Building Malhar with snapshot dependency

[Thomas Weise]

Once Apex Core 3.2.0 is released, we will update Malhar to replace the
snapshot dependency with the release. Until then, you can utilize the
Apache snapshot repository to retrieve the artifacts (see below).

The Travis CI environment uses this repository by default.

Thanks,
Thomas

Add the following to your ~/.m2/settings.xml

  <profiles>
    <profile>
      <activation>
        <activeByDefault>true</activeByDefault>
      </activation>
      <repositories>
        <repository>
          <id>apache.snapshots</id>
          <name>Apache Snapshot Repository</name>
          <url>http://repository.apache.org/snapshots</url>          <releases>
            <enabled>false</enabled>
          </releases>
        </repository>
      </repositories>
    </profile>
  </profiles>